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Taphole device

A technology for tapping holes and heat-resistant bricks, which is applied to discharge devices, lighting and heating equipment, furnace components, etc. The effect of leakage

Active Publication Date: 2017-08-08
NIPPON STEEL & SUMIKIN ENG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Thus, with the countermeasures proposed in the above-mentioned Patent Document 1, the gas leakage during tapping cannot be sufficiently suppressed, and the tapping failure caused by the gas leakage cannot be sufficiently solved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0044] exist figure 1In the furnace shell (furnace shell) 11, staves 12 for cooling are arranged in a row, and heat-resistant bricks 13 for protection are stacked inside the blast furnace to constitute the furnace body 10 of the blast furnace. In the gap between the furnace skin 11 , staves 12 and heat-resistant bricks 13 , unshaped refractory materials 14 such as lining material or pouring material are filled.

[0045] A cylindrical casing 16 passing through the furnace shell 11 is provided at the taphole portion 15 of the blast furnace. The top end of the casing 16 passes through the opening of the stave 12, and is arranged to face the surface of the heat-resistant brick 13 (reaches the vicinity of the surface of the heat-resistant brick 13). The furnace body 10 of the blast furnace is formed with a passage 17 for tapping extending through the inside of the shell 16 into the furnace.

[0046] The inside of the casing 16 is filled with the same monolithic refractory materi...

no. 2 Embodiment approach

[0083] This embodiment has the same structure as the above-mentioned first embodiment, but the sealing mechanism 20 in this embodiment has a structure different from that of the first embodiment. Therefore, the same structures as those in the first embodiment are given the same symbols and descriptions thereof are omitted, and a sealing mechanism having a different structure will be described in detail below.

[0084] exist Figure 5 In this embodiment, the sealing mechanism 20A has an annular steel seal holder 21A, and the surface of the seal holder 21A is covered with a seal member 22A made of a heat-resistant elastomer.

[0085] The sealing member 22A is disposed on the same side as the sealing member 22 of the first embodiment described above (see figure 2) at the same position. Therefore, the entire circumference of the sealing member 22A is pressed against the inner peripheral surface of the end opening of the housing 16, and thus, a case having an airtight sealing fu...

no. 3 Embodiment approach

[0090] This embodiment has the same points as the above-mentioned first embodiment, but has a different structure from the sealing mechanism 20 in this embodiment. Therefore, the same structures as those in the first embodiment are given the same symbols and descriptions thereof are omitted, and a sealing mechanism having a different structure will be described in detail below.

[0091] exist Figure 6 Among them, the seal mechanism 20 of the present embodiment has a steel seal bracket 21B, which is cylindrical and has an L-shaped cross section.

[0092] The seal bracket 21B can be manufactured by welding together a cylindrical portion corresponding to the shape of the inner peripheral surface of the housing 16 and a ring-shaped plate corresponding to the shape of the surface of the heat-resistant brick 13 . However, it is also possible to manufacture the seal holder 21B by bending L-shaped steel into a ring shape.

[0093] A case side seal member 221B is provided on the out...

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Abstract

The taphole device has: a furnace skin (11); heat-resistant bricks (13), which are stacked along the inside of the furnace skin (11); and a cylindrical shell (16), which passes through the furnace skin (11). ) and is arranged opposite the heat-resistant brick (13); an annular or cylindrical sealing mechanism (20) is provided at the end of the housing (16) on one side of the heat-resistant brick (13) part, the sealing mechanism (20) has a housing side sealing part (221) and a heat-resistant brick side sealing part (222), wherein the housing side sealing part (221) is to the housing (16) and The sealing mechanism (20) air-tightly seals the entire circumference; the heat-resistant brick side sealing portion (222) air-tightly seals the heat-resistant brick (13) and the sealing mechanism (20) throughout the circumference.

Description

technical field [0001] The present invention relates to a taphole device and relates to a structure of a taphole of a blast furnace for iron making. Background technique [0002] In a blast furnace for iron and steel making, a taphole is formed on the wall surface of the furnace body of the molten iron storage part, and molten iron is made to flow out from the taphole into a molten iron trough, and the molten iron is taken out. [0003] In cases other than tapping, the taphole is blocked by clay-like clay. When tapping, use a special hole opener to drill holes in the clay from the outside to open the tap hole and let the molten iron flow out. Tapping operations like this are performed every 2 to 3 hours. [0004] In order to perform such tapping work, for example, a taphole device disclosed in Patent Document 1 is used. The taphole devices in the prior art including Patent Document 1 have Figure 7 structure shown. [0005] exist Figure 7 In the furnace shell 91, staves...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B7/14
CPCC21B7/14F27D3/1518C22B7/00F27B7/00
Inventor 芦刈透古馆昭二
Owner NIPPON STEEL & SUMIKIN ENG CO LTD